How do you get to Praiano from Sorrento? Car or Bus? We are going to Hotel Tritone?
Perhaps ask the hotel what mode they recommend. Have a great trip!
Try asking Elizabeth at Blue Star Positano
You can take one of the Sita buses going from Sorrento to Praiano Your luggage will be stored under the bus. The bus has 10 stops en route and the journey can take up to 90 minutes. Without a rental car, the other option is to take a shuttle. Your hotel should be able to provide you with details.
A private driver is probably about 100 euros +-
Ask your hotel or do a search here on forum
There are many recommendations
We used
www.topexcursionsorrento.com for transfers in the area